CVE-2026-29038
Medium
Description
changedetection.io is a free open source web page change detection tool. Prior to version 0.54.4, there is a reflected cross-site scripting (XSS) vulnerability identified in the /rss/tag/ endpoint of changedetection.io. The tag_uuid path parameter is reflected directly in the HTTP response body without HTML escaping. Since Flask returns text/html by default for plain string responses, the browser parses and executes injected JavaScript. This issue has been patched in version 0.54.4.
SeverityMedium
CVSS6.1
Exploit probability—
ProductWebtechnologies Changedetection
PublishedMar 6, 2026
First seenMar 6, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- webtechnologies changedetection0.54.4 or later
- changedetection-io0.54.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| webtechnologies changedetection | v < 0.54.4 | 0.54.4 |
| changedetection-ioPyPI | v < 0.54.4 | 0.54.4 |
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